﻿@inject IStringLocalizer<Foo> FooLocalizer
@inject IStringLocalizer<TablesColumnVisible> Localizer

<Button Text="@Localizer["ResetVisibleColumnsButtonText"]" OnClickWithoutRender="ResetVisibleColumns"></Button>

<Table TItem="Foo" @ref="TableColumnVisibles"
        IsPagination="true" PageItemsSource="@PageItemsSource"
        IsStriped="true" IsBordered="true" IsMultipleSelect="true"
        ShowToolbar="true" ShowAddButton="false" ShowEditButton="false" ShowDeleteButton="false"
        ShowExtendButtons="false" ShowColumnList="true"
        OnQueryAsync="@OnQueryAsync">
    <TableColumns>
        <TableColumn @bind-Field="@context.DateTime" Width="180" />
        <TableColumn @bind-Field="@context.Name" />
        <TableColumn @bind-Field="@context.Address" Width="290" />
        <TableColumn @bind-Field="@context.Education" />
        <TableColumn @bind-Field="@context.Count" Visible="false" />
        <TableColumn @bind-Field="@context.Complete" />
    </TableColumns>
</Table>

@code {
    /// <summary>
    /// Foo 类为Demo测试用，如有需要请自行下载源码查阅
    /// Foo class is used for Demo test, please download the source code if necessary
    /// https://gitee.com/LongbowEnterprise/BootstrapBlazor/blob/main/src/BootstrapBlazor.Shared/Data/Foo.cs
    /// </summary>
    [NotNull]
    private List<Foo>? Items { get; set; }

    private static IEnumerable<int> PageItemsSource => new int[] { 5, 10, 20 };

    [NotNull]
    private Table<Foo>? TableColumnVisibles { get; set; }

    /// <summary>
    /// OnInitialized 方法
    /// </summary>
    protected override void OnInitialized()
    {
        base.OnInitialized();

        Items = Foo.GenerateFoo(FooLocalizer);
    }

    private Task ResetVisibleColumns()
    {
        TableColumnVisibles.ResetVisibleColumns(new ColumnVisibleItem[]
        {
            new(nameof(Foo.DateTime), true),
            new(nameof(Foo.Name), false),
            new(nameof(Foo.Address), false),
            new(nameof(Foo.Education), false),
            new(nameof(Foo.Count), false),
            new(nameof(Foo.Complete), true)
        });
        return Task.CompletedTask;
    }

    private Task<QueryData<Foo>> OnQueryAsync(QueryPageOptions options)
    {
        IEnumerable<Foo> items = Items;

        // 过滤
        var isFiltered = false;
        if (options.Filters.Any())
        {
            items = items.Where(options.Filters.GetFilterFunc<Foo>());
            isFiltered = true;
        }

        // 排序
        var isSorted = false;
        if (!string.IsNullOrEmpty(options.SortName))
        {
            var invoker = Foo.GetNameSortFunc();
            items = invoker(items, options.SortName, options.SortOrder);
            isSorted = true;
        }

        // 设置记录总数
        var total = items.Count();

        // 内存分页
        items = items.Skip((options.PageIndex - 1) * options.PageItems).Take(options.PageItems).ToList();

        return Task.FromResult(new QueryData<Foo>()
        {
            Items = items,
            TotalCount = total,
            IsSorted = isSorted,
            IsFiltered = isFiltered,
            IsSearch = true
        });
    }
}
